Bernie Sanders renewed his war with Amazon over working conditions for its lowest paid employees

On Monday, he tweeted that Amazon needs to improve working conditions for its warehouse employees following a report from the Daily Beast detailing 911 calls.

Sanders previously demanded that Amazon raise its minimum wage, which it did in November last year.

He's not the only Democratic 2020 candidate to take aim at the tech giant.

Bernie Sanders has stepped back into the ring with Amazon.

The 2020 Democratic presidential candidate has been a vocal critic of the company and its CEO Jeff Bezos in the past. Previously he called for a $15 minimum wage, which Amazon introduced in November last year.

Sanders praised the decision at the time, saying: "Mr Bezos and Amazon are now leading the way."